Can I remove text floating over a custom header?

I am using the quintus theme, and I have added a custom header. I disabled the text in the header. When I look at my blog in Google Chrome, it looks great. When I look at it in IE8, there is black text on top of my image. Also, the dates are in circles on chrome, but are squares on IE8. Can I fix this? Thanks!
Blog url: http://yourmemoriescollected.wordpress.com/